Heart's Delight-Islington, Newfoundland and Labrador climate data is summarized below. Average annual temperatures range from 2.8 °C (low) to 8 °C (high). Annual precipitation averages 972 Millimeters. Heart's Delight-Islington is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.81 °C | -0.26 °C | 62 mm |
| February | -6.58 °C | -1.28 °C | 62 mm |
| March | -4.76 °C | -0.15 °C | 58 mm |
| April | -1.05 °C | 3.72 °C | 68 mm |
| May | 2.83 °C | 8.35 °C | 79 mm |
| June | 6.94 °C | 12.7 °C | 67 mm |
| July | 12 °C | 18.09 °C | 75 mm |
| August | 13.45 °C | 19.03 °C | 80 mm |
| September | 10.46 °C | 16.11 °C | 102 mm |
| October | 6.5 °C | 11.11 °C | 114 mm |
| November | 2.21 °C | 6.74 °C | 106 mm |
| December | -2.31 °C | 2.44 °C | 99 mm |
| Annual | 2.8 °C | 8 °C | 972 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |